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51 package org.apache.fop.render.pdf;
52
53 import java.util.List  ;
54 import java.util.Map ;
55 import java.io.IOException ;
56 import java.net.URL ;
57
58 import org.apache.fop.render.pdf.fonts.*;
59 import org.apache.fop.pdf.PDFCIDFont;
60 import org.apache.fop.configuration.ConfigurationReader;
61 import org.apache.fop.configuration.Configuration;
62 import org.apache.fop.apps.FOPException;
63 import org.apache.fop.tools.URLBuilder;
64
65 import org.xml.sax.helpers.DefaultHandler ;
66 import org.xml.sax.XMLReader ;
67 import org.xml.sax.SAXException ;
68 import org.xml.sax.InputSource ;
69 import org.xml.sax.Locator ;
70 import org.xml.sax.Attributes ;
71
72
82 public class FontReader extends DefaultHandler {
83 private Locator locator = null;
84 private boolean isCID = false;
85 private MultiByteFont multiFont = null;
86 private SingleByteFont singleFont = null;
87 private Font returnFont = null;
88 private String text = null;
90
91 private List cidWidths = null;
92 private int cidWidthIndex = 0;
93
94 private Map currentKerning = null;
95
96 private List bfranges = null;
97
98 private void createFont(URL url) throws FOPException {
99 XMLReader parser = ConfigurationReader.createParser();
100 if (parser == null)
101 throw new FOPException("Unable to create SAX parser");
102
103 try {
104 parser.setFeature("http://xml.org/sax/features/namespace-prefixes",
105 false);
106 } catch (SAXException e) {
107 throw new FOPException("You need a SAX parser which supports SAX version 2",
108 e);
109 }
110
111 parser.setContentHandler(this);
112
113 try {
114 parser.parse(new InputSource (url.openStream()));
115 } catch (SAXException e) {
116 throw new FOPException(e);
117 } catch (IOException e) {
118 throw new FOPException(e);
119 }
120
121 }
122
123
126 public void setFontEmbedPath(URL path) {
127 if (isCID)
128 multiFont.embedFileName = path;
129 else
130 singleFont.embedFileName = path;
131 }
132
133
136 public void useKerning(boolean kern) {
137 if (isCID)
138 multiFont.useKerning = true;
139 else
140 singleFont.useKerning = true;
141 }
142
143
144
147 public Font getFont() {
148 return returnFont;
149 }
150
151
155 public FontReader(URL path) throws FOPException {
156 createFont(path);
157 }
158
159 public void startDocument() {}
160
161 public void setDocumentLocator(Locator locator) {
162 this.locator = locator;
163 }
164
165 public void startElement(String uri, String localName, String qName,
166 Attributes attributes) throws SAXException {
167 if (localName.equals("font-metrics")) {
168 if ("TYPE0".equals(attributes.getValue("type"))) {
169 multiFont = new MultiByteFont();
170 returnFont = multiFont;
171 isCID = true;
172 } else if ("TRUETYPE".equals(attributes.getValue("type"))) {
173 singleFont = new SingleByteFont();
174 singleFont.subType = org.apache.fop.pdf.PDFFont.TRUETYPE;
175 returnFont = singleFont;
176 isCID = false;
177 } else {
178 singleFont = new SingleByteFont();
179 singleFont.subType = org.apache.fop.pdf.PDFFont.TYPE1;
180 returnFont = singleFont;
181 isCID = false;
182 }
183 } else if ("embed".equals(localName)) {
184 if (isCID) {
185
187 String filename = attributes.getValue("file");
188 if (filename != null) {
189 try {
190 multiFont.embedFileName = URLBuilder.buildURL(
191 Configuration.getFontBaseURL(), filename);
192 } catch (java.net.MalformedURLException mfue) {
193 throw new SAXException (mfue);
194 }
195 }
196 multiFont.embedResourceName = attributes.getValue("class");
197 } else {
198 String filename = attributes.getValue("file");
199 if (filename != null) {
200 try {
201 singleFont.embedFileName = URLBuilder.buildURL(
202 Configuration.getFontBaseURL(), filename);
203 } catch (java.net.MalformedURLException mfue) {
204 throw new SAXException (mfue);
205 }
206 }
207 singleFont.embedResourceName = attributes.getValue("class");
208 }
209 } else if ("cid-widths".equals(localName)) {
210 cidWidthIndex = getInt(attributes.getValue("start-index"));
211 cidWidths = new java.util.ArrayList ();
212 } else if ("kerning".equals(localName)) {
213 currentKerning = new java.util.HashMap ();
214 if (isCID)
215 multiFont.kerning.put(new Integer (attributes.getValue("kpx1")),
216 currentKerning);
217 else
218 singleFont.kerning.put(new Integer (attributes.getValue("kpx1")),
219 currentKerning);
220 } else if ("bfranges".equals(localName)) {
221 bfranges = new java.util.ArrayList ();
222 } else if ("bf".equals(localName)) {
223 BFEntry entry = new BFEntry();
224 entry.unicodeStart = getInt(attributes.getValue("us"));
225 entry.unicodeEnd = getInt(attributes.getValue("ue"));
226 entry.glyphStartIndex = getInt(attributes.getValue("gi"));
227 bfranges.add(entry);
228 } else if ("wx".equals(localName)) {
229 cidWidths.add(new Integer (attributes.getValue("w")));
230 } else if ("widths".equals(localName)) {
231 singleFont.width = new int[256];
232 } else if ("char".equals(localName)) {
233 try {
234 singleFont.width[Integer.parseInt(attributes.getValue("idx"))] =
235 Integer.parseInt(attributes.getValue("wdt"));
236 } catch (NumberFormatException ne) {
237 System.out.println("Malformed width in metric file: "
238 + ne.getMessage());
239 }
240 } else if ("pair".equals(localName)) {
241 currentKerning.put(new Integer (attributes.getValue("kpx2")),
242 new Integer (attributes.getValue("kern")));
243 }
244 }
245
246 private int getInt(String str) {
247 int ret = 0;
248 try {
249 ret = Integer.parseInt(str);
250 } catch (Exception e) {}
251 return ret;
252 }
253
254 public void endElement(String uri, String localName, String qName) {
255 if ("font-name".equals(localName))
256 if (isCID)
257 multiFont.fontName = text;
258 else
259 singleFont.fontName = text;
260 if ("ttc-name".equals(localName) && isCID)
261 multiFont.ttcName = text;
262 else if ("cap-height".equals(localName))
263 if (isCID)
264 multiFont.capHeight = getInt(text);
265 else
266 singleFont.capHeight = getInt(text);
267 else if ("x-height".equals(localName))
268 if (isCID)
269 multiFont.xHeight = getInt(text);
270 else
271 singleFont.xHeight = getInt(text);
272 else if ("ascender".equals(localName))
273 if (isCID)
274 multiFont.ascender = getInt(text);
275 else
276 singleFont.ascender = getInt(text);
277 else if ("descender".equals(localName))
278 if (isCID)
279 multiFont.descender = getInt(text);
280 else
281 singleFont.descender = getInt(text);
282 else if ("left".equals(localName))
283 if (isCID)
284 multiFont.fontBBox[0] = getInt(text);
285 else
286 singleFont.fontBBox[0] = getInt(text);
287 else if ("bottom".equals(localName))
288 if (isCID)
289 multiFont.fontBBox[1] = getInt(text);
290 else
291 singleFont.fontBBox[1] = getInt(text);
292 else if ("right".equals(localName))
293 if (isCID)
294 multiFont.fontBBox[2] = getInt(text);
295 else
296 singleFont.fontBBox[2] = getInt(text);
297 else if ("first-char".equals(localName))
298 singleFont.firstChar = getInt(text);
299 else if ("last-char".equals(localName))
300 singleFont.lastChar = getInt(text);
301 else if ("top".equals(localName))
302 if (isCID)
303 multiFont.fontBBox[3] = getInt(text);
304 else
305 singleFont.fontBBox[3] = getInt(text);
306 else if ("flags".equals(localName))
307 if (isCID)
308 multiFont.flags = getInt(text);
309 else
310 singleFont.flags = getInt(text);
311 else if ("stemv".equals(localName))
312 if (isCID)
313 multiFont.stemV = getInt(text);
314 else
315 singleFont.stemV = getInt(text);
316 else if ("italic-angle".equals(localName))
317 if (isCID)
318 multiFont.italicAngle = getInt(text);
319 else
320 singleFont.italicAngle = getInt(text);
321 else if ("missing-width".equals(localName))
322 if (isCID)
323 multiFont.missingWidth = getInt(text);
324 else
325 singleFont.missingWidth = getInt(text);
326 else if ("cid-type".equals(localName)) {
327 if ("CIDFontType2".equals(text))
328 multiFont.cidType = PDFCIDFont.CID_TYPE2;
329 } else if ("default-width".equals(localName)) {
330 multiFont.defaultWidth = getInt(text);
331 } else if ("cid-widths".equals(localName)) {
332 int[] wds = new int[cidWidths.size()];
333 for (int i = 0; i < cidWidths.size(); i++ ) {
334 wds[i] = ((Integer )cidWidths.get(i)).intValue();
335 }
336
337 multiFont.warray.addEntry(cidWidthIndex, wds);
338 multiFont.width = wds;
339
340 } else if ("bfranges".equals(localName)) {
341 BFEntry[] entries = new BFEntry[bfranges.size()];
342 entries = (BFEntry[])bfranges.toArray(entries);
343 multiFont.bfentries = entries;
344 }
345
346 }
347
348 public void characters(char[] ch, int start, int length) {
349 char c[] = new char[length];
350 System.arraycopy(ch, start, c, 0, length);
351 text = new String (c);
352 }
353
354 }
355
356
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